Aki Toyosaki (born October 28, 1986 in Tokushima Prefecture, Japan) is a
Japanese actress and singer. She had her first major voice acting roles in 2007,
voicing Amuro Ninagawa in Kenkō Zenrakei Suieibu Umishō and Su in Shugo Chara!
however, her career as a musician began after she recorded the opening and
ending themes of the anime series K-On! in April 2009. Forming a quartet with
Ayahi Takagaki, Haruka Tomatsu, and Minako Kotobuki to record "Future Stream"
from First Love Limited, the group rebranded as Sphere, and the theme was
released as the group's first single on April 22...